Hadith 1897
Sayyiduna Hudhayfah (may Allah be pleased with him) narrates: I performed prayer behind the Prophet (peace and blessings be upon him). When he went into bowing (ruku‘), he began to recite «سُبْحَانَ رَبِّيَ الْعَظِیمِ», and when he went into prostration (sajdah), he recited «سُبْحَانَ رَبِّيَ الْأَعْلَی».